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Essex

Past Producer in Inyo county in California, United States with commodities Lead, Silver, Copper, Gold
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Host and associated rocks
  8. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Mining district
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10076623
MRDS ID W023749
Record type Site
Current site name Essex
Alternate or previous names Big Silver

Geographic coordinates

Geographic coordinates: -117.88481, 36.7694 (WGS84)
Elevation 701
Relative position 1 MILE SOUTH OF HUNTER CREEK, 50 MILES NORTH OF KEELER.

Site location context

Political divisions (FIPS codes)

Inyo(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Pat Keyes Canyon(quadrangle 1:24,000 scale)

Saline Valley(quadrangle 1:100,000 scale)

Death Valley(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Eureka-Saline Valleys(hydrologic unit)

Northern Mojave(hydrologic accounting unit)

Northern Mojave-Mono Lake(hydrologic subregion)

California(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management CA)

Bureau of Land Management CA BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States California Inyo

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 013S 038E 31 California

Comments on the location information

  • UTM EST. ; INFO FROM LAND.ST :UNDETERMINED

Commodities

Commodity Importance
Lead Primary
Silver Primary
Copper Secondary
Gold Secondary

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone

Nearby scientific data

(1) -117.88481, 36.7694
ListMap

Economic information

Ore body information

  • Strike E - W
    Dip 70 S
    Width 3.05M

Comments on the geologic information

  • GEOL.DESC: GEOLOGY IN VICINITY OF MINE IS MADE UP OF SILURIAN AND ORDOVICIAN METAMORPHIC LIMESTONE AND QUARTZITE. LIMESTONE IS CUT BY NUMEROUS INTRUSIONS OF FINE-GRAINED, DARK-GREEN HORNBLENDE DIORITE.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Ubehebe

Comments on the production information

  • REPORTED TO CARRY 30 OZ AG PER TON AND SORTED UP TO 200 OZ AG PER TON. SHIPPED ORE 1928 ; RECOVERY 1.75 % PB, 65.6 OZ AG PER TON, SOME COPPER AND GOLD.

Comments on the workings information

  • AT 2150 FT. ELEVATION; TUNNEL, DRIVEN S 45 W FOR 250 FT. AT 2150 FT, ANOTHER TUNNEL DRIVEN 136 FT. ON EAST - WEST VEIN. AT 2800 FT, A CROSSCUT TUNNEL IS DRIVEN S 20 E. NUMBER OF SHORT TUNNELS RANGING FROM 20 - 50 FT. IN LENGTH.

Reference information

Bibliographic references

  • Deposit

    GOODWIN, J. C., 1957 , LEAD AND ZINC IN CALIFORNIA; CALIF. JOUR. MINES AND GEOLOGY, VOL. 53 , NO. 3 & 4 ; DIV. OF MINES, P. 470 .

  • Deposit

    TUCKER, W. B., 1926 , LOS ANGELES FIELD DIV., 22ND REPT. STATE MINERALOGIST; CALIF. MIN. BUR., P. 477 - 478 .

  • Production

    TUCKER, W. B., 1926 , P. 477 - 478 (SEE REF.)

General comments

Subject category Comment text
Deposit SILVER BEARING ORE ALONG BEDDING PLANES OF LIMESTONE, ALSO IN CROSS FRACTURES AND FISSURES CUTTING LIMESTONE AND DIORITE. MOST INTENSE ENRICHMENT OCCURS NEAR CONTACT BETWEEN LIMESTONE AND DIORITE. 2 SYSTEMS OF VEINS, ONE TREND NORTH, OTHER TRENDS EAST.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1978 Fraticelli, L. A. (Albers, J.) U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site

Authoritative California resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.